______ time went by, Cindy and the other kids became good friends.
Peter is a _______boy. His younger brother is _______.
—The supermarket is crowded(拥挤的). There are _______ people there.—Yeah, and the things there are always __________ expensive(贵的).
We all like ________animal. Because they are ______ interesting.
Could you tell me if Bob__________ the party? If he __________ , please tell me .
I don’t know when he_____________; when he__________, I’ll tell you.